golden alexanders
noun
golden al·ex·an·ders -ˌa-lig-ˈzan-dərz 
-ˌe-lig-
variants or golden Alexanders
plural in form but singular or plural in construction
: a North American yellow-flowered perennial herb (Zizia aurea) of the carrot family occurring in moist woods and meadows
also : any of several related herbs
Example Sentences
Recent Examples on the Web Perennials include milkweeds, asters, senna, golden alexanders, violets, toothworts, turtlehead, hairy beardtongue, hibiscus, and pussytoes. 
Miri Talabac, Baltimore Sun, 13 Apr. 2022 The plant on the left is the nearly-identical Zizia aurea, also called golden Alexander — a native perennial and important plant food for the Missouri woodland swallowtail butterfly, according to the Missouri Botanical Garden. Caroline Picard, Good Housekeeping, 3 Aug. 2018
Miri Talabac, Baltimore Sun, 13 Apr. 2022 The plant on the left is the nearly-identical Zizia aurea, also called golden Alexander — a native perennial and important plant food for the Missouri woodland swallowtail butterfly, according to the Missouri Botanical Garden. Caroline Picard, Good Housekeeping, 3 Aug. 2018 Word History
Etymology
alexander any of various herbs of the carrot family, ultimately from Medieval Latin alexandrum
First Known Use
1789, in the meaning defined above